.bottom {
  height: 80px;
}
.bottom .b_com {
  height: 100%;
  width: 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.bottom .b_com .tusize {
  font-size: 35px;
}
.bottom .active {
  color: deepskyblue;
}
.mytop {
  height: 60px;
  width: 90%;
  margin: auto;
  border-bottom: 1px solid #dddd;
}
.mytop .active {
  position: relative;
}
.mytop .active::after {
  content: "";
  height: 2px;
  width: 90%;
  position: absolute;
  background: deepskyblue;
  bottom: -90%;
  left: 0;
}
